19315480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 46183680

約数和(自身を除く): 26868200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 421, 620, 740, 842, 1147, 1240, 1480, 1684, 2105, 2294, 3368, 4210, 4588, 5735, 8420, 9176, 11470, 13051, 15577, 16840, 22940, 26102, 31154, 45880, 52204, 62308, 65255, 77885, 104408, 124616, 130510, 155770, 261020, 311540, 482887, 522040, 623080, 965774, 1931548, 2414435, 3863096, 4828870, 9657740, 19315480]

約数ペア:

[(1, 19315480), (2, 9657740), (4, 4828870), (5, 3863096), (8, 2414435), (10, 1931548), (20, 965774), (31, 623080), (37, 522040), (40, 482887), (62, 311540), (74, 261020), (124, 155770), (148, 130510), (155, 124616), (185, 104408), (248, 77885), (296, 65255), (310, 62308), (370, 52204), (421, 45880), (620, 31154), (740, 26102), (842, 22940), (1147, 16840), (1240, 15577), (1480, 13051), (1684, 11470), (2105, 9176), (2294, 8420), (3368, 5735), (4210, 4588)]